From: Jaegeuk Kim <jaegeuk@kernel.org>
To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Subject: [PATCH] f2fs: add a way to turn off ipu bio cache
Date: Mon, 6 Jan 2020 18:07:09 -0800 [thread overview]
Message-ID: <20200107020709.73568-1-jaegeuk@kernel.org> (raw)
Setting 0x40 in /sys/fs/f2fs/dev/ipu_policy gives a way to turn off
bio cache, which is useufl to check whether block layer using hardware
encryption engine merges IOs correctly.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
Documentation/filesystems/f2fs.txt | 1 +
fs/f2fs/segment.c | 2 +-
fs/f2fs/segment.h | 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index 41b5aa94b30f..cd93bcc34726 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -335,6 +335,7 @@ Files in /sys/fs/f2fs/<devname>
0x01: F2FS_IPU_FORCE, 0x02: F2FS_IPU_SSR,
0x04: F2FS_IPU_UTIL, 0x08: F2FS_IPU_SSR_UTIL,
0x10: F2FS_IPU_FSYNC.
+ 0x40: F2FS_IPU_NOCACHE disables bio caches.
min_ipu_util This parameter controls the threshold to trigger
in-place-updates. The number indicates percentage
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index a9519532c029..311fe4937f6a 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3289,7 +3289,7 @@ int f2fs_inplace_write_data(struct f2fs_io_info *fio)
stat_inc_inplace_blocks(fio->sbi);
- if (fio->bio)
+ if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE)))
err = f2fs_merge_page_bio(fio);
else
err = f2fs_submit_page_bio(fio);
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index a1b3951367cd..02e620470eef 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -623,6 +623,7 @@ enum {
F2FS_IPU_SSR_UTIL,
F2FS_IPU_FSYNC,
F2FS_IPU_ASYNC,
+ F2FS_IPU_NOCACHE,
};
static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi,
--
2.24.0.525.g8f36a354ae-goog
next reply other threads:[~2020-01-07 2:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 2:07 Jaegeuk Kim [this message]
2020-01-08 7:59 ` [f2fs-dev] [PATCH] f2fs: add a way to turn off ipu bio cache Chao Yu
2020-01-08 12:04 ` Jaegeuk Kim
2020-01-08 12:23 ` Chao Yu
2020-01-08 23:18 ` Jaegeuk Kim
2020-01-11 9:26 ` Chao Yu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200107020709.73568-1-jaegeuk@kernel.org \
--to=jaegeuk@kernel.org \
--cc=linux-f2fs-devel@lists.sourceforge.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).